- Reorder slash command api requests, include slack response example
- Case fix and added changelog

The endpoint dropped, get ':id/repository/commits/:sha/jobs', should be
replace by a new endpoint.

MR: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9250/

See https://gitlab.com/madlittlemods/gl-mock-ci-service

[ci skip]

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/440

This reverts commit 3e991230.

# Conflicts:
#	app/models/project.rb

[ci skip]

product names, plus a couple of instances of bad Markdown markup.

capitalized.

Make the plural version consistently "URLs".

Fix an instance where the article "the" before URL was missing.